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, Detailed introduction of low-noise and high-pressure differential control valve Product brief description High-pressure and low-noise cage control valve is a pressure-balanced multi-stage pressure reduction control valve, mainly used for (steam, air, natural gas, etc. Gas) compressible fluid is designed to reduce noise. In order to adapt to gas throttling, diffusion and expansion, the sleeve is equipped with many symmetrical holes, which can greatly reduce the noise generated by high-pressure differential gas or steam, and can also effectively prevent The cavitation phenomenon caused by liquid is an economical regulating valve that resists cavitation, has low noise, and controls the fluid stably. The valve core is equipped with two metal sealing rings, and the leakage level is Level III. The regulating valve is equipped with a multi-spring pneumatic diaphragm actuator with compact structure and large output force. It is suitable for high and low temperature and high pressure and high pressure difference occasions that require good dynamic stability, low noise and high reliability. Type straight-through cage cast ball valve nominal Diameter,,,,,,, nominal pressure,, connection type flange type,,, standard press (or) welded socket welding (~) butt welding (~) valve body, upper bonnet material, /, /, / / / Upper bonnet type Normal temperature type ~ + ℃ Extension type I ~ ℃ + ~ + ℃ Gland type Bolt compression type packing graphite + Inconel wire packing, flexible graphite braided packing and other sealing gaskets Metal toothed gasket, Graphite wound gasket valve trim part Valve core type Pressure balanced valve core sleeve Separate, porous type secondary throttling structure Flow characteristics Metal seal Linear characteristics Valve trim material,,,,+,+, etc. Balance seal ring material nickel Cast iron ℃ operating temperature ℃, ℃ operating temperature ℃ and ℃ < operating temperature ℃ Material reinforced polytetrafluoroethylene +, ℃ operating temperature ℃ Flexible graphite, ℃ operating temperature ℃ Actuator type multi-spring diaphragm actuator diaphragm material ethylene propylene rubber Clamp nylon spring range air supply pressure air source joint/ambient temperature ~+℃ Optional accessories positioner, air filter pressure reducing valve, solenoid valve, limit switch, valve position transmitter, position retaining valve, handwheel mechanism, others Note: This valve can also be equipped with a cylinder piston actuator or an electric actuator. Overall machine performance. Mode of action. Air-closed type (with positive-acting actuator). Air-open type (with reactionary actuator). Adjustable ratio valve seat leakage. Metal valve seat. Complies with (and Class III, metal valve seats smaller than the rated ones comply with (and Class IV, smaller than the rated backlash smaller than the full stroke (with positioner)
Vertical multi-stage centrifugal pump/
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